Compute! Issue 21 - February 1982. The Editor's Notes A Major Format Change - Ask The Readers Using Keypad with Atari 800 - Ask The Readers Stringy Floppy with OSI ROM - Ask The Readers PET/CBM Disk ID - Ask The Readers Computer Assisted Instruction - Worth the Effort? - Ask The Readers Files in OS65D 3.0 - Ask The Readers Problems with Unwedge - Ask The Readers Atari Screendump to Tape? - Ask The Readers Programming PROMs? - Ask The Readers Problems loading tape on Atari - Ask The Readers PET Program Translation - Computers And Society On Piracy... - The Beginner's Page Translating Equations - Guest Commentary: Hidden Costs of Computer Technology - Insurance Inventory - Creating A Simple Word Processor - Transposition - Telecommunications Why 300 Baud? - Reading The Status Register - Book Review: Some Common BASIC Programs - Multitask: A Realtime, Multitasking Operating System Emulator - Plotting Polar Graphs With The Apple II - Disassembling Machine Language Programs Without Leaving BASIC - Named GOSUB With Variable Passing - INSIGHT: Atari Atari I/O, Part 4: Graphics - P/M Graphics Made Easy - Review: Eastern Front (1941) - Odds And Ends: Clearing Memory - OVERVIEW: Textwizard - Put Graphics Modes 1 And 2 At The Bottom Of Your Screen - Atari PILOT At The Helm - Moire Magic - Put A Rainbow In Your Atari - A Small Operating System: OS65D, The Disk Routines - Correction For Progressive Computing Chess 1.9 - A User-defined Character Editor - Marquee - Disk Disassembler - Line Input For The PET - Measure Time Intervals With The PET Parallel User Port - Review: Screen Pro - Extended VIC-20 Input Devices: Paddles And The Keyboard - Timekeeping - An Easy Way To Relocate VIC Programs On Other Commodore Computers - Review: UMI Amok For VIC - Review: UMI 3K VIC Memory Expansion - Alphabetizer - CAPUTE! Corrections and Amplifications - New Products Board Offers 24K Additional Memory For VIC 20 - New Products PDI Announces Publication Of Do-It-Yourself Spelling - New Products Mountain Computer Announces RAMPLUS + For The Apple II Computer - New Products Calendar Clock System For Small Computers - New Products TYCOM Introduces Three Educational Packages - New Products Model MP150 Wide Carriage Printer - New Products Multi-purpose Interface For PET CBM Computers - New Products Axlon Personal Communication Terminal Announced - New Products Medical Package For Apple III - New Products Business Planner - New Products Pascal Procedures For Business - New Products Financial Modeling Software Package - New Products Prism Printer From Integral Data Systems - New Products New From Commodore - New Products From Krell Software Corp. - New Products From Strategic Simulations - New Products From Automated Simulations - New Products From Synergistic Software - New Products Sirius Software Announces Addition To Their Product Line - New Products Dial Data Gives Micro Users Access To Financial Markets.